- 介绍：
有吸湿性。在空气中很快吸收氨和从铵盐中置换氨。不溶于水和碱；溶于酸，露置空气中易吸收二氧化碳和水。半数致死量(大鼠，腹腔)500mg/kg。
- 熔点： 2410 °C
- 比重： 5.01
- 用途： 制造红外线光谱仪中光源。乙炔灯和煤气灯的纱罩。彩色电视管荧光体。氧化锆耐火材料稳定剂。荧光粉。人造宝石激光晶体、超导材料以及电子工业方面的许多尖端应用。
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